Packing-box.



W. T. SNELL.

PACKING BOX.

APPLICATION FILED JULY 26, 1911.

1,018,938. Patented Feb.27,1912.

3 2 SHEETS-SHEET 1.

WITNESSES INVENTOI? mm [Jae/Z ATTORNEYS W. T. SNELL.

PAOKING BOX.

APPLICATION FILED JULY 26, 1911.

1,018,938. Patented Feb.27, 1912.

2 SHEETS-SHIEIIBTv 2.

WITNESSES INVENTOR ATTORNEYS COLUMBIA PLANOGRAPH 60-.WASHINGTON. D. c.

WILLIAM '1. SNELL, 0F BISBEE, ARIZONA TERRITORY.

PACKING-BOX.

Specification of Letters Patent.

Patented Feb. 27, 1912.

Application filed July 26, 1911. serial No. 640,646.

To all whom it may concern:

Be it known that I, WILLIAM T. SNELL a citizen of the United States, anda resident of Bisbee, in the county of Cohise and Territory of Arizona,have invented a new and Improved Packing-Box, of which the fol lowingisa full, clear, and exact description.

My invention is directed to a packing box which is adapted for use onplungers of pumps and also on piston rods and valve stems, the object ofthe invention being to provide a new and improved form of packing devicewhich will effectively prevent leakage and which is simple in itsconstruction.

A further object of my invention is to provide a new and improved meansfor holding a packing box in position on a pump plunger, or piston rod,or valve stem, additional means being provided for applying suitablepressure to the packing material so that the same may be held securelyin position.

A further object of my invention is to provide a new and improved formof packing box having adjustable means'thereon for applying pressure tothe packing material whereby the same may be secured in place in orderto prevent leakage, the adjustment being secured without the use of anytool engaging the parts.

Reference is to be had to the accompanying drawings forming a part ofthis specification in which similar characters of reference denotecorresponding parts in all the views, and in which- Figure 1 is a sideview, partly in section, showing my packing box adapted .to a doublecylinder pump; Fig. 2 is a sectional view on the line 22 of Fig. 3; Fig.3 is a sectional view of the packing box on the line 33 of Fig. 1. Fig.4 is a sectional view similar to Fig. 2 showing a modified form ofconstruction; Fig. 5 is a partial vertical sectional view setting forththe form shown in Fig. 4 applied to a single cylinder.

The opposite cylinder heads of a suitable double cylinder pump orequivalent device are designated 1 and 2, while the piston rod is marked3; my device is adapted .to be positioned between the cylinder heads 1and 2 and in engagement with each, the parts thereof being capable ofvariation in size in order to adapt the box to different pumps.

The packing box comprises the cylindrical members 4, 5, havingperipheral flanges 6, 7, at adjacent .ends thereof, the members beingthreaded as at 8, 9, throughout the greater portion of their length, theends of each of the members being provided with a peripheral flange orshoulder 10,11. These flanges 10, 11, may be formed on the ends of themembers 4, 5, in any suitable manner or they may be 'made separately andfastened thereon.

' The peripheral flanges 6, 7, are in engagement with each other throughsuitable blocks 12, through which and the flanges a bolt and nut 13extend whereby the parts are properly spaced and the packing material 14is secured in position between them.

The flanges 10, 11, at the opposite ends of the device are each adaptedto be positioned within the stuffing box or opening in the cylinderheads 1, 2, a packing ring of any desirable material 15 being positionedagainst these flanges and being maintained in position by engagementwith the glands 16, 17, which are adapted to be brought into engagementtherewith and. secured adjacent the cylinder, head by means of anynumber of'suitablebolts 18.

The packing material 14 is positioned between the flanged ends 6, 7, ofthe members 4, 5, and is of suflicient width to be securely engagedtherein, the packing material itself being held in close frictionalcont-act with the piston rod 3 by means preferably of the followingconstruction. 20, preferably of steel, is positioned around the packingmaterial 14, one end of the member being in engagement at 21 with theend of the bolt 22, the other end portion of the spring being providedwith a projection or boss 23 thereon, against which the end of a-wedge24 is adapted to engage, as

particularly shown in Fig. 3, the bolt 22' being suitably positionedbetween the bifurcated end 25 of the bracket 26, the wedge being alsopositioned on this bracket and its outer end being in engagement with anoffset portion 27 of the'bracket so that when.

a suitable nut 28 is tightened on the threaded end of the bolt and inengagement with the A spring member end 25, the movement of the boltwill tighten the spring on the packing material, the end of the springbeing held against movement by reason of engagement with the end of thewedge 24: which in its turn is held against movement by engagement withthe beforementioned offset portion 27.

The use of the invention as illustrated in the drawings may be set forthas follows: The cylindrical members 4:, 5, are positioned on the pistonrod 3 and the flanges 10, 11, are brought into the stufling box openingsin the cylinder heads 1 and 2, the packing material 15 being then placedin position and secured therein by engagement with the glands 16, 17 thepacking material 14 being previously positioned on the piston rod andbetween the flanges 6, 7. The packing material is held between theflanges and on the piston rod with the requisite amount of pressure bymeans of the adjustable spring 20, tightening of the spring bringing anydesired amount of pressure to bear on the packing material withincertain limits so that this material is firmly held between the flanges6, 7, and leakage is prevented.

In Fig. 4: a modified form of construction, similar to that shown inFig. 2, is illustrated, the modification consisting in making thecylindrical members 5, 4:, integral with the cylinder heads 1, 2; inthis construction the flanges 6, 7, are similar in structure andfunction to those shown in Fig. 2, being adapted to receive the packingmaterial 14 and the spring member 20 between them, the spring holdingthe packing material in closed engagement with the shaft or piston rod3.

In Fig. 5 the integral form of construction illustrated in Fig. 4 is setforth applied to a single cylinder; in this case the cylindrical member5 which is similar in structure and function to the member 5. of Fig.

4 is integral with the cylinder head l the peripheral flange 7 issimilar to the flange 7 of Fig. 4c, the packing material being retainedbetween this flange and another one 6*, the flanges being held in properrelative posit-ion by means of suitable bolts and nuts 100. In thisstructure the piston rod 3 passes through the cylindrical member 5 andis engaged by the packing material previously described, the flange 6surrounding the rod 3 and serving to retain the packing material inproper position, the flanges being secured together as mentioned. Thedevice for retaining the packing material on the shaft or rod 3 issimilar to what has already been described and it is not believed that afurther explanation is necessary.

While certain sizes of parts and a certain ratio between the sizes isshown in the drawings, it is evident that such features of the device assize, shape and relative strength of parts will depend upon the engineor pump, etc. with which the device is used, the changes in theserespects being mechanical in order to adapt the device to these enginesor pumps and being included within the spirit and scope of my invention.

Having thus described my invention, I claim as new, and desire to secureby Letters Patent 1. A packing box comprising a cylindrical memberhaving a flanged outer end adapted to be positioned on a piston rod,suitable packing material surrounding the piston rod adjacent the saidflanged end of the member, means for holding the packing materialadjacent the said end, together with other means for engagement with thepacking material whereby the pressure thereon may be varied in order tohold it in close engagement with the piston rod.

2. A packing box comprising acylindrical member adapted tosurround apiston rod, the outer end of the member being pro vided with a flange,packing material adj acent the flange and surrounding the piston rod,other means adjacent the packing material and extending around the rodfor holding the material in position, together with movable meansembodying a spring in engagement with the packing material whereby thepressure on the same may be varied, thereby preventing leakage.

3. A packing box comprising a cylindrical member adapted to bepositioned on a piston rod, packing material at one end of the saidmember, the said end being adapted to be positioned within the openingin the cylinder head through which the rod passes, there being means onthe member for engagement with the packing material in order to hold itsecured in position, a flange at the opposite end of the saidmember,pack ing material adjacent the flange and surrounding the pistonrod, another member also surrounding the piston rod and adjacent thepacking material in order to hold the same in position on the rod,together with means embodying a spring surrounding the packing material,and a bolt in engagement with the spring whereby tightening of thespring may lncrease the pressure on the packing material on the rod inorder to prevent leakage.

4. A packing box comprising a cylindrical member adapted to bepositioned on a piston rod, the opposite end portions of the memberbeing provided with peripheral flanges, one flange being adapted'to bepositioned within the opening in the cylinder head through which thesaid rod passes, packing material on the member adjacent the flange,together with other means carried by the member and adapted forengagement with the cylinder head in order to securely position thepacking material therein, a quantity of packing material adjacent theother flanged end of the said member and surrounding the said pistonrod, means adjacent the packing material and in engagement with thepiston rod for engagement with the packing material in order to secureit in posit-ion, together with means embodying a spring member inengagement with the packing material for applying pressure thereto inorder to secure it on the piston rod, thereby preventing leakage.

5. A packing boX comprising a cylindrical member adapted to bepositioned on a piston rod, the opposite ends of the member beingprovided with flanges, one of the flanges being adapted to enter theopening in the cylinder head through which the rod passes, a suitablequantity of packing material contained adjacent the said flange andwithin the said opening, together with a gland positioned on the said.member adapted to engage the cylinder head to hold the material securedin position, a quantity of suitable packing material on the piston rodand adjacent the other flanged end of the said member, a memberencircling the piston rod adjacent the packing material and opposite thesaid flange, together with means for securing the flange and the saidmember with the packing material between them, and other means embodyinga spring in engagement with the packing means whereby pressure thereonmay be varied in order to prevent leakage.

6. A packing box comprising a cylindrical member adapted to bepositioned on a piston rod, packing material adjacent one end of thesaid member and positioned in the opening in the cylinder head, othermeans being provided on the said member for engagement with the cylinderhead in order to secure the packing in position, a quantity of suitablepacking adjacent the opposite end of the said member, the said packingencircling the piston rod, a member also encircling the piston rod andop-v posite the said end of the said member in order to position thepacking material, together with means embodying a spring in engagementwith the packing material and a bolt having a nut thereon wherebymovement of the bolt will move the spring, thereby increasing thepressure on the packing material in order to prevent leakage.

7. A packing boX comprising a cylindrical member adapted to bepositioned on a piston rod, packing material adjacent one end of I themember and contained within the opening in the cylinder head, othermeans for engagement with the cylinder head for securing the packingmaterial in position, a peripheral flange at the opposite end of thesaid member, packing material surrounding the piston rod adjacent theflange, another member encircling the piston rod being provided with athreaded bolt having a nut thereon in engagement with the bracket, theother end of the spring being in engagement with a wedge'also bearing onthe said bracket whereby as the said bolt is moved in one direction thesaid spring is tightened, thereby bringing pressure to bear on thepacking material in order to prevent leakage.

8. A packing box for double cylinder pumps or the like comprising aplurality of cylindrical members adapted to engage the piston rod, theadjacent ends of the said members being provided with peripheralflanges, a quantity of packing material encircling the piston rodbetween the said flanges, the remote ends of the said members beingprovided with packing material, the said ends being adapted to bepositioned within the openingsin the cylinder heads through which thepiston rod passes, each member being also provided with means forsecuring the said ends in position, a bracket carried by the first-namedflanges, a spring member encircling the packing material and positionedbetween the flanges, together with means carried by the spring memberand engaging other means carried by the bracket whereby the pressure onthe spring may be varied, thereby varying the pressure on the packingmaterial in order to prevent leakage.

9. The combination of a piston rod, a member in which the rodreciprocates, a quantity of packing material surrounding the rod, meansfor holding the said packing material in position on the rod andothermeans engaging the packing material whereby it may be brought intoclose engagement with the rod.

10. The combination of a piston rod, a member in which the rodreciprocates, a quantity of packing material adjacent the outer end ofthe member and surrounding the rod, means for keeping the packingmaterial in position, and movable means surrounding the packing materialand in engagement therewith whereby it may be tightly compressed on therod in order to prevent leakage.

11. The combination of a piston rod, a member in which the said rodreciprocates, the outer end of the member being provided with a flange,a quantity of packing material surrounding the rod and adjacent the saidflange, an element adjacent the packing material, the said element andthe flange being in engagement with each other through the medium of abracket, together with resilient means surrounding the packing material,and other means carried by the bracket whereby the packing may becompressed and leakage prevented.

12. The combination oi a piston rod, a member in which the said rodreciprocates, the outer end of the member being flanged, a quantity ofpacking material surrounding the rod and adjacent the said flanged end,an element adjacent the packing, a bracket, the bracket being inengagement with the said flanged end and the element, a spring memberpassing around the packing material, a boss on the spring, means carriedby the bracket and in engagement with the spring member, together withother means carried by the bracket and engaging the said boss whereby,when the said means is moved relatively to the said member, the springmember will be tightened and the packing material placed under pressurewhereby leakage is prevented.

13. The combination of a piston rod, a member in which the rodrec-iprocates, the outer end of the member being provided with a flange,a quantity of packing material surrounding the rod and adjacent theflange, an element adjacent the packing material, the packing materialbeing positioned between the said element and the said flange, abracket, the bracket being in engagement with the element and theflange, a movable bolt carried by the bracket, a spring membersurrounding'the packing material, one end of the member being inengagement with the bolt, the spring member being provided with a boss,a wedge carried by the bracket and engaging the boss, together with anut on the said bolt, tightening of which moves the bolt relatively tothe wedge whereby the spring member is tightened and the packingmaterial compressed, thereby preventing leakage.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM T. SNELL.

l/Vitnesses:

LEONARD E. MONTGOMERY, FRED LAMBERT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

